public bool SetCompleted() => CompletedWaitHandle.Set();
/// <summary>
/// Process the completion of a user-registered wait (call the callback).
/// </summary>
/// <param name="state">A <see cref="CompletedWaitHandle"/> object representing the wait completion.</param>
private void CompleteWait(object state)
{
CompletedWaitHandle handle = (CompletedWaitHandle)state;
handle.CompletedHandle.PerformCallback(handle.TimedOut);
}
public bool WaitCompleted() => CompletedWaitHandle.WaitOne();